Which instructions provide information on promoting senior enlisted personnel to commissioned officer status?

The correct choice addresses the specific instructions that detail the process for promoting senior enlisted personnel to commissioned officer status. OPNAVINST 1420.1 is particularly important as it lays out the policies and procedures for the commissioning of enlisted personnel, making it a primary reference for understanding the advancement from enlisted to officer ranks. NAVPERS 15627 complements this by providing additional guidance and details concerning the applications and eligibility criteria for senior enlisted personnel looking to make this transition.

These references ensure that all personnel involved are aware of the necessary requirements and the structure of the promotion process within the Navy. In combination, they provide a comprehensive framework that supports enlisted sailors in their pursuit of becoming commissioned officers, aligning with the Navy's objectives for leadership development and career advancement.